Here's the definition that's on our security deposit page, which doesn't get into the nitty-gritty: Normal wear and tear is a term that Wisconsin law does not define.
(3)Protein Fat-Free Percentage, Protein Fat-Free Content, PFF Percentage, PFF Content or PFF of a product means the meat protein (indigenous to the raw, unprocessed pork cut) content expressed as a percent of the non-fat portion of the finished product.
HARPC is similar in concept to hazard analysis and critical control points (HACCP), which is required for foods such as seafood, juices and USDA-regulated meat and poultry. Importantly, HARPC is not applicable to those HACCP facilities or to any USDA-regulated facilities, among others.